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SubjectRe: [PATCH v4] kbuild: Add support for DT binding schema checks
Hi Rob,

On Tue, Dec 11, 2018 at 9:24 PM Rob Herring <robh@kernel.org> wrote:
> This adds the build infrastructure for checking DT binding schema
> documents and validating dts files using the binding schema.
>
> Check DT binding schema documents:
> make dt_binding_check
>
> Build dts files and check using DT binding schema:
> make dtbs_check
>
> Optionally, DT_SCHEMA_FILES can be passed in with a schema file(s) to
> use for validation. This makes it easier to find and fix errors
> generated by a specific schema.
>
> Currently, the validation targets are separate from a normal build to
> avoid a hard dependency on the external DT schema project and because
> there are lots of warnings generated.
>
> Cc: Jonathan Corbet <corbet@lwn.net>
> Cc: Mark Rutland <mark.rutland@arm.com>
> Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
> Cc: Michal Marek <michal.lkml@markovi.net>
> Cc: linux-doc@vger.kernel.org
> Cc: devicetree@vger.kernel.org
> Cc: linux-kbuild@vger.kernel.org
> Signed-off-by: Rob Herring <robh@kernel.org>

BTW, what are the CONFIG dependencies for this to work?
E.g. defconfig on x86_64 fails, even after enabling CONFIG_OF:

$ make dt_binding_check
SCHEMA Documentation/devicetree/bindings/processed-schema.yaml
CHKDT Documentation/devicetree/bindings/arm/primecell.yaml
...
CHKDT Documentation/devicetree/bindings/trivial-devices.yaml
make[1]: *** No rule to make target
'Documentation/devicetree/bindings/arm/primecell.example.dtb', needed
by '__build'. Stop.

Obviously it does work for arm/arm64.

Thanks!

Gr{oetje,eeting}s,

Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds

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